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/*
Copyright (C) 2000-2011 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __libardour_region_sorters_h__
#define __libardour_region_sorters_h__
#include "ardour/region.h"
namespace ARDOUR {
struct LIBARDOUR_API RegionSortByPosition {
bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
return a->position() < b->position();
}
};
struct LIBARDOUR_API RegionSortByLayer {
bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
return a->layer() < b->layer();
}
};
/* sort by RegionSortByLayerAndPosition()
* is equivalent to
* stable_sort by RegionSortByPosition();
* stable_sort by RegionSortByLayer();
*/
struct LIBARDOUR_API RegionSortByLayerAndPosition {
bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
return
(a->layer() < b->layer() && a->position() < b->position())
|| (a->layer() == b->layer() && a->position() < b->position());
}
};
} // namespace
#endif /* __libardour_region_sorters_h__ */
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